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          用js在页面生成button
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              <time title="创建时间：2020-05-29 15:49:22 / 修改时间：17:16:37" itemprop="dateCreated datePublished" datetime="2020-05-29T15:49:22+08:00">2020-05-29</time>
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        <h1 id="用js在页面生成button"><a href="#用js在页面生成button" class="headerlink" title="用js在页面生成button"></a>用js在页面生成button</h1><p>一个简单的js脚本文件</p>
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<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">(<span class="function"><span class="keyword">function</span>(<span class="params"></span>) </span>&#123;</span><br><span class="line"><span class="meta">    'use strict'</span>;</span><br><span class="line">    <span class="keyword">var</span> button = <span class="built_in">document</span>.createElement(<span class="string">"input"</span>); <span class="comment">//创建一个input对象（提示框按钮）</span></span><br><span class="line">    button.setAttribute(<span class="string">"type"</span>, <span class="string">"button"</span>);</span><br><span class="line">    button.setAttribute(<span class="string">"id"</span>, <span class="string">"sub"</span>);</span><br><span class="line">    button.setAttribute(<span class="string">"value"</span>, <span class="string">"点击开始"</span>);</span><br><span class="line">    button.style.width = <span class="string">"60px"</span>;</span><br><span class="line">    button.style.align = <span class="string">"center"</span>;</span><br><span class="line">    button.style.marginLeft = <span class="string">"250px"</span>;</span><br><span class="line">    button.style.marginBottom = <span class="string">"10px"</span>;</span><br><span class="line">    button.style.background = <span class="string">"#b46300"</span>;</span><br><span class="line">    button.style.border = <span class="string">"1px solid "</span> + <span class="string">"#b46300"</span>;<span class="comment">//52</span></span><br><span class="line">    button.style.color = <span class="string">"white"</span>;</span><br><span class="line">    <span class="keyword">var</span> x = <span class="built_in">document</span>.getElementById(<span class="string">"init"</span>);<span class="comment">//在视频画面上生成一个名叫“点击开始”的按钮</span></span><br><span class="line">    x.appendChild(button);</span><br><span class="line">   </span><br><span class="line">&#125;)();<span class="comment">//以上代码为js的自调用函数</span></span><br><span class="line"><span class="built_in">document</span>.getElementById(<span class="string">'sub'</span>).onclick = a;</span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">a</span>(<span class="params"></span>)</span></span><br><span class="line"><span class="function">           </span>&#123;</span><br><span class="line">                    $.ajax(&#123;</span><br><span class="line">                        url: <span class="string">"/tools/submit_ajax.ashx?action=zxkthf&amp;time="</span>+(<span class="keyword">new</span> <span class="built_in">Date</span>()),</span><br><span class="line">                        type: <span class="string">"get"</span>,</span><br><span class="line">                        data:&#123;</span><br><span class="line">                            learntime:myVideo.duration,</span><br><span class="line">                            roomid:<span class="built_in">document</span>.location.href.split(<span class="string">'/'</span>)[<span class="number">5</span>],</span><br><span class="line">                            playHeadTime:myVideo.duration</span><br><span class="line">                        &#125;,</span><br><span class="line">                        contentType: <span class="string">"application/json"</span>,</span><br><span class="line">                        dataType: <span class="string">"json"</span>,</span><br><span class="line">                        success: <span class="function"><span class="keyword">function</span> (<span class="params">data</span>) </span>&#123;</span><br><span class="line">                            <span class="keyword">if</span> (data.msg == <span class="number">1</span>) &#123;</span><br><span class="line">                            </span><br><span class="line">                            &#125; <span class="keyword">else</span> <span class="keyword">if</span> (data.msg == <span class="number">0</span>) &#123;</span><br><span class="line">                                $(<span class="string">'body'</span>).stopTime(<span class="string">'A'</span>);</span><br><span class="line">                                myVideo.pause();</span><br><span class="line">                                $.ligerDialog.error(data.msgbox);</span><br><span class="line">                            &#125;</span><br><span class="line">                        &#125;,</span><br><span class="line">                        error: <span class="function"><span class="keyword">function</span> (<span class="params">data</span>) </span>&#123;</span><br><span class="line">                        &#125;</span><br><span class="line">                    &#125;);    </span><br><span class="line">            &#125;</span><br></pre></td></tr></table></figure>


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